package cn.android_mobile.toolkit;

	import javax.crypto.Cipher;   
	import javax.crypto.spec.IvParameterSpec;   
import javax.crypto.spec.SecretKeySpec; 
	public class DES {   
	private static byte[] iv = {1,2,3,4,5,6,7,8};   
	public static String encryptDES(String encryptString, String encryptKey) throws Exception {   
	//      IvParameterSpec zeroIv = new IvParameterSpec(new byte[8]);    
	        IvParameterSpec zeroIv = new IvParameterSpec(iv);   
	        SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES");   
	        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");   
	        cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv);   
	        byte[] encryptedData = cipher.doFinal(encryptString.getBytes());
	        return Base64.encode(encryptedData);   
	    }
	public static String decryptDES(String decryptString, String decryptKey) throws Exception {   
	        byte[] byteMi = new Base64().decode(decryptString);   
	        IvParameterSpec zeroIv = new IvParameterSpec(iv);   
	//      IvParameterSpec zeroIv = new IvParameterSpec(new byte[8]);    
	        SecretKeySpec key = new SecretKeySpec(decryptKey.getBytes(), "DES");   
	        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");   
	        cipher.init(Cipher.DECRYPT_MODE, key, zeroIv);   
	        byte decryptedData[] = cipher.doFinal(byteMi);
	        return new String(decryptedData);   
	    }   
	}  
